Modified bitumen is a flexible, asphalt-based roofing material designed for low-slope roofs. It is reinforced with polymers, such as SBS (styrene-butadiene-styrene) or APP (atactic polypropylene), to enhance durability, flexibility, and weather resistance. Typically installed in multiple layers using heat welding, cold adhesives, or self-adhering sheets, modified bitumen offers strong waterproofing, resistance to temperature fluctuations, and the ability to withstand foot traffic.
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